20697530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{457}}^1\times {\mathrm{647}}^1$

素因数の和:1118

約数の個数: 32

約数和(自身を含む): 42736896

約数和(自身を除く): 22039366

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 457, 647, 914, 1294, 2285, 3199, 3235, 4529, 4570, 6398, 6470, 9058, 15995, 22645, 31990, 45290, 295679, 591358, 1478395, 2069753, 2956790, 4139506, 10348765, 20697530]

約数ペア:

[(1, 20697530), (2, 10348765), (5, 4139506), (7, 2956790), (10, 2069753), (14, 1478395), (35, 591358), (70, 295679), (457, 45290), (647, 31990), (914, 22645), (1294, 15995), (2285, 9058), (3199, 6470), (3235, 6398), (4529, 4570)]